Round|Natural|GIA

1.20ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2527585822

Certificate GIA 2527585822

Diamond specifications and retailer prices

From $3,425 USD
As of October 25, 2026
Save $3,563 USD (51%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,633 USD at NZ Jewellers · As of September 28, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2527585822. Listed at 21 retailers as of October 25, 2026, with a 104% 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

1.20
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2527585822
Dimensions6.82 × 6.80 × 4.22 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.82 mm6.80 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2527585822
Side View
Table 58.0%Crown 34.5°Girdle: Sli. ThickPavilion 41.4°Culet: NoneDepth 62.1%

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 25
Current: $4,228 USD|Low: $3,053 USD|High: $7,062 USD|Avg: $4,743 USD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7$3,425 USD
Retailer 8$3,664 USD
Retailer 3$3,985 USD
Retailer 1$4,228 USD
Retailer 2$4,454 USD
Retailer 4$4,669 USD
Retailer 9$4,673 USD
Retailer 5$5,335 USD
Retailer 6$6,988 USD

44 data points across 9 retailers

21 retailers$3,425 USD to $6,988 USD

A
Cheapest Retailer
-
$3,425 USD
A
Retailer 2
-
$3,493 USD
View
A
Retailer 3
-
$3,664 USD
View
Final sale: no returns
B+
Retailer 4
-
$3,785 USD
View
B+
Retailer 5
-
$3,900 USD
View
Retailer 6
-
$3,969 USD
View
Price last confirmed 29 days ago
Retailer 7
-
$3,969 USD
View
Price last confirmed 31 days ago
B+
Retailer 8
-
$3,985 USD
A$6,131 AUD
View
B+
Retailer 9
-
$4,228 USD
£3,329 GBP
View
B+
Retailer 10
-
$4,454 USD
£3,507 GBP
View
B+
Retailer 11
-
$4,480 USD
View
B+
Retailer 12
-
$4,480 USD
View
Retailer 13
-
$4,580 USD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
$4,614 USD
View
B+
Retailer 15
-
$4,630 USD
View
B+
Retailer 16
-
$4,669 USD
€4,447 EUR
View
Retailer 17
-
$4,673 USD
A$7,190 AUD
View
Price last confirmed 20 days ago
Retailer 18
-
$4,956 USD
View
Price last confirmed 7 days ago
B+
Retailer 19
-
$5,335 USD
ZAR 86,191 ZAR
View
B
Retailer 20
-
$6,988 USD
£5,502 GBP
View
Most Expensive
NZ Jewellers
edb8209f-f13d-4790-8314-98fb76eb4070 · Sep 28
$7,633 USD
View
Price last confirmed 32 days ago
20 more retailers have this diamond
Prices start from $3,425 USDSave up to $3,563 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
$3,425 USD