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2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2544271085

Certificate GIA 2544271085

Diamond specifications and retailer prices

From $30,903 NZD
$17,417 USD
As of November 2, 2026
Save $38,737 NZD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $69,640 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2544271085. Listed at 17 retailers as of November 1, 2026, with prices from $30,903 to $69,640, a $38,737 spread on the same certified stone. MOH London lists it at $69,640. 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

2.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2544271085
Dimensions8.59 × 8.65 × 5.40 mm
L/W Ratio1.01
Top View
8.59 mm8.65 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2544271085
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $69,640 NZD|Low: $29,301 NZD|High: $70,481 NZD|Avg: $48,404 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 2$30,903 NZD
Retailer 3$38,573 NZD
Retailer 6$40,491 NZD
Retailer 5$42,732 NZD
Retailer 13$44,592 NZD
Retailer 8$44,984 NZD
Retailer 4$45,651 NZD
Retailer 12$46,820 NZD
Retailer 11$48,307 NZD
Retailer 7$49,887 NZD
Retailer 9$53,863 NZD
Retailer 10$61,659 NZD
Retailer 14$63,170 NZD
MOH London$69,640 NZD

32 data points across 14 retailers

17 retailers$30,903 NZD to $69,640 NZD

B
Cheapest Retailer
-
$30,903 NZD
$17,417 USD
B+
Retailer 2
-
$38,573 NZD
$21,740 USD
View
B+
Retailer 3
-
$40,491 NZD
$22,821 USD
View
B+
Retailer 4
-
$40,598 NZD
$22,881 USD
View
B+
Retailer 5
-
$42,732 NZD
$24,084 USD
View
Final sale: no returns
B+
Retailer 6
-
$43,417 NZD
$24,470 USD
View
B
Retailer 7
-
$44,592 NZD
$25,132 USD
View
B+
Retailer 8
-
$44,984 NZD
£19,963 GBP
View
B
Retailer 9
-
$45,651 NZD
$25,729 USD
View
B
Retailer 10
-
$46,820 NZD
$26,388 USD
View
B
Retailer 11
-
$47,663 NZD
$26,863 USD
View
B
Retailer 12
-
$48,307 NZD
$27,226 USD
View
B+
Retailer 13
-
$49,887 NZD
£22,139 GBP
View
B
Retailer 14
-
$53,863 NZD
€28,912 EUR
View
B
Retailer 15
-
$61,659 NZD
ZAR 561,411 ZAR
View
B
Retailer 16
-
$63,170 NZD
$35,603 USD
View
Most Expensive
B
MOH London
374279A59 · Nov 1
$69,640 NZD
£30,905 GBP
View
16 more retailers have this diamond
Prices start from $30,903 NZDSave up to $38,737 NZD

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.

B+
2.51ct Round
$30,903 NZD