Round|Natural|GIA

1.09ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7538742548

Certificate GIA 7538742548

Diamond specifications and retailer prices

From $2,381 USD
As of October 30, 2026
Save $3,755 USD (61%) vs most expensive(unlock to see where)
32 retailers carry this diamond
Most expensive: $6,136 USD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.09ct natural round diamond

This 1.09ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7538742548. Listed at 32 retailers as of October 30, 2026, with a 158% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.09
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7538742548
Dimensions6.53 × 6.56 × 4.08 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural
Top View
6.53 mm6.56 mm1.09 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7538742548
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,824 USD|Low: $2,249 USD|High: $4,967 USD|Avg: $3,253 USD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 2$2,381 USD
Retailer 12$2,454 USD
Retailer 3$2,620 USD
Retailer 9$2,659 USD
Retailer 1$2,824 USD
Retailer 11$3,015 USD
Retailer 6$3,119 USD
Retailer 4$3,288 USD
Retailer 10$3,423 USD
Retailer 8$3,436 USD
Retailer 7$3,607 USD
Retailer 5$4,909 USD

38 data points across 12 retailers

32 retailers$2,381 USD to $6,136 USD

A
Cheapest Retailer
-
$2,381 USD
A
Retailer 2
-
$2,454 USD
View
Final sale: no returns
B+
Retailer 3
-
$2,620 USD
View
Retailer 4
-
$2,659 USD
View
Price last confirmed 44 days ago
B+
Retailer 5
-
$2,659 USD
View
Retailer 6
-
$2,659 USD
View
Price last confirmed 24 days ago
Retailer 7
-
$2,659 USD
View
Price last confirmed 16 days ago
Retailer 8
-
$2,659 USD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$2,696 USD
View
Retailer 10
-
$2,761 USD
View
Price last confirmed 32 days ago
B+
Retailer 11
-
$2,824 USD
£2,224 GBP
View
B+
Retailer 12
-
$2,920 USD
View
B+
Retailer 13
-
$2,920 USD
View
B+
Retailer 14
-
$3,015 USD
View
Retailer 15
-
$3,015 USD
View
Price last confirmed 23 days ago
B+
Retailer 16
-
$3,020 USD
View
Retailer 17
-
$3,068 USD
View
Price last confirmed 23 days ago
Retailer 18
-
$3,068 USD
View
Price last confirmed 40 days ago
Retailer 19
-
$3,068 USD
View
Price last confirmed 11 days ago
B+
Retailer 20
-
$3,068 USD
View
B+
Retailer 21
-
$3,119 USD
£2,456 GBP
View
Retailer 22
-
$3,288 USD
A$5,059 AUD
View
Price last confirmed 24 days ago
B
Retailer 23
-
$3,332 USD
View
Retailer 24
-
$3,408 USD
View
Price last confirmed 17 days ago
B
Retailer 25
-
$3,423 USD
£2,695 GBP
View
B+
Retailer 26
-
$3,436 USD
€3,272 EUR
View
B+
Retailer 27
-
$3,607 USD
ZAR 58,278 ZAR
View
B
Retailer 28
-
$4,909 USD
£3,865 GBP
View
B
Retailer 29
-
$6,136 USD
View
Retailer 30
-
$6,136 USD
View
Price last confirmed 34 days ago
Retailer 31
-
$6,136 USD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
7cb4caa3-458e-4818-8c6c-6a4c63ffcf89 · Oct 20
$6,136 USD
View
Price last confirmed 11 days ago
31 more retailers have this diamond
Prices start from $2,381 USDSave up to $3,755 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.09ct Round
$2,381 USD