Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2537749649

Certificate GIA 2537749649

Diamond specifications and retailer prices

From $2,394 USD
As of October 28, 2026
Save $3,044 USD (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $5,438 USD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct 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 2537749649. Listed at 22 retailers as of October 27, 2026, with prices from $2,394 to $5,438, a $3,044 spread on the same certified stone. NZ Jewellers lists it at $5,438. 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

1.20
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2537749649
Dimensions6.70 × 6.75 × 4.22 mm
L/W Ratio1.01
Top View
6.70 mm6.75 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2537749649
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.8%

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 28
Current: $5,248 USD|Low: $2,422 USD|High: $5,282 USD|Avg: $3,485 USD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 7$2,454 USD
Retailer 5$2,476 USD
Retailer 3$3,222 USD
Retailer 6$3,346 USD
Retailer 2$3,432 USD
Retailer 8$3,622 USD
Retailer 4$3,801 USD
Retailer 1$5,248 USD

38 data points across 8 retailers

22 retailers$2,394 USD to $5,438 USD

A
Cheapest Retailer
-
$2,394 USD
A
Retailer 2
-
$2,454 USD
View
A
Retailer 3
-
$2,460 USD
View
A
Retailer 4
-
$2,532 USD
View
A
Retailer 5
-
$2,617 USD
A$4,026 AUD
View
B+
Retailer 6
-
$2,770 USD
View
Retailer 7
-
$2,828 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$2,828 USD
View
B+
Retailer 9
-
$2,887 USD
CA$4,010 CAD
View
Retailer 10
-
$2,936 USD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
$3,069 USD
View
Retailer 12
-
$3,069 USD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
$3,222 USD
£2,537 GBP
View
B+
Retailer 14
-
$3,263 USD
View
Retailer 15
-
$3,346 USD
A$5,148 AUD
View
Price last confirmed 28 days ago
B+
Retailer 16
-
$3,432 USD
€3,269 EUR
View
Retailer 17
-
$3,622 USD
View
Price last confirmed 9 days ago
B
Retailer 18
-
$3,662 USD
View
B
Retailer 19
-
$3,801 USD
ZAR 61,398 ZAR
View
B
Retailer 20
-
$4,501 USD
View
B
Retailer 21
-
$5,248 USD
£4,132 GBP
View
Most Expensive
B
NZ Jewellers
ac5c681b-21ff-4628-9ab8-4c8d28162f44 · Oct 27
$5,438 USD
View
21 more retailers have this diamond
Prices start from $2,394 USDSave up to $3,044 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
1.20ct Round
$2,394 USD