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Round|Natural|GIA

2.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1518212262

Certificate GIA 1518212262

Diamond specifications and retailer prices

From $53,621 NZD
$30,221 USD
As of October 30, 2026
Save $44,825 NZD (46%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $98,446 NZD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 2.5ct natural round diamond

This 2.5ct natural round sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1518212262. Listed at 20 retailers as of October 29, 2026, with prices from $53,621 to $98,446, a $44,825 spread on the same certified stone. Diamond Quarter lists it at $98,446. 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

2.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1518212262
Dimensions8.76 × 8.82 × 5.31 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Cloud, Natural
Top View
8.76 mm8.82 mm2.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1518212262
Side View
Table 61.0%Crown 32.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 60.5%

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: Oct 30
Current: $71,033 NZD|Low: $53,621 NZD|High: $94,652 NZD|Avg: $66,206 NZD|+2.1%
Retailer 1
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 11$53,621 NZD
Retailer 8$54,521 NZD
Retailer 10$58,153 NZD
Retailer 9$59,367 NZD
Retailer 13$59,852 NZD
Retailer 4$59,884 NZD
Retailer 16$60,465 NZD
Retailer 3$62,379 NZD
Retailer 17$62,879 NZD
Retailer 2$64,032 NZD
Retailer 6$64,876 NZD
Retailer 12$65,297 NZD
Retailer 7$67,370 NZD
Retailer 18$69,810 NZD
Retailer 1$71,033 NZD
Retailer 5$71,372 NZD
Retailer 19$74,982 NZD
Retailer 15$82,367 NZD
Retailer 14$94,026 NZD

29 data points across 19 retailers

20 retailers$53,621 NZD to $98,446 NZD

B+
Cheapest Retailer
-
$53,621 NZD
$30,221 USD
B+
Retailer 2
-
$54,521 NZD
$30,728 USD
View
B+
Retailer 3
-
$58,153 NZD
$32,775 USD
View
Retailer 4
-
$59,367 NZD
A$51,476 AUD
View
Price last confirmed 28 days ago
B+
Retailer 5
-
$59,852 NZD
£26,561 GBP
View
B+
Retailer 6
-
$59,884 NZD
$33,751 USD
View
B+
Retailer 7
-
$60,465 NZD
CA$47,331 CAD
View
B+
Retailer 8
-
$62,379 NZD
$35,157 USD
View
B+
Retailer 9
-
$62,879 NZD
$35,439 USD
View
B
Retailer 10
-
$64,032 NZD
$36,089 USD
View
B
Retailer 11
-
$64,876 NZD
$36,564 USD
View
B+
Retailer 12
-
$65,297 NZD
£28,977 GBP
View
B+
Retailer 13
-
$67,370 NZD
$37,970 USD
View
B+
Retailer 14
-
$69,810 NZD
$39,345 USD
View
B+
Retailer 15
-
$71,033 NZD
€38,128 EUR
View
B+
Retailer 16
-
$71,372 NZD
$40,225 USD
View
B
Retailer 17
-
$74,982 NZD
$42,260 USD
View
B
Retailer 18
-
$82,367 NZD
ZAR 749,958 ZAR
View
B
Retailer 19
-
$94,026 NZD
£41,727 GBP
View
Most Expensive
B
Diamond Quarter
2.5SI1D1562EF73N · Oct 29
$98,446 NZD
£43,689 GBP
View
19 more retailers have this diamond
Prices start from $53,621 NZDSave up to $44,825 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+
2.50ct Round
$53,621 NZD