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Cushion|Natural|IGI

2.51ct F SI2 Cushion Natural Diamond

EX • F/SI2 • IGI 310

Certificate IGI 310

Diamond specifications and retailer prices

From HK$43,070 HKD
$5,489 USD
As of October 31, 2026
Save HK$28,674 HKD (40%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$71,745 HKD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg Diamonds

About this 2.51ct natural cushion diamond

This 2.51ct natural cushion sits in the two to three carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 2 retailers as of October 31, 2026, with prices from HK$43,070 to HK$71,745, a HK$28,674 spread on the same certified stone. Helzberg Diamonds lists it at HK$71,745. 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabIGI
CertificateIGI 310
Dimensions8.14 × 7.24 mm
L/W Ratio1.12
Top View
8.14 mm7.24 mm2.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 310
Side View
Table 60.0%CrownGirdle: THN-THKPavilionCuletDepth 69.6%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: HK$71,745 HKD|Low: HK$43,070 HKD|High: HK$75,417 HKD|Avg: HK$58,731 HKD|-4.9%
Helzberg Diamonds
Retailer 2
October 24, 2026
Retailer 2HK$43,070 HKD
Helzberg DiamondsHK$71,745 HKD

13 data points across 2 retailers

2 retailersHK$43,070 HKD to HK$71,745 HKD

A
Cheapest Retailer
-
HK$43,070 HKD
$5,489 USD
Most Expensive
A
Helzberg Diamonds
ZXZNPPMNKMIP · Nov 1
HK$71,745 HKD
$9,144 USD
View
1 more retailer has this diamond
Prices start from HK$43,070 HKDSave up to HK$28,674 HKD

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
2.51ct Cushion
HK$43,070 HKD