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Cushion|Natural|GIA

0.51ct H SI1 Cushion Natural Diamond

GD • H/SI1 • GIA 2537508439

Certificate GIA 2537508439

Diamond specifications and retailer prices

From HK$2,798 HKD
As of November 6, 2026
Save HK$801 HKD (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$3,598 HKD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2537508439. Listed at 4 retailers as of November 6, 2026, with prices from HK$2,798 to HK$3,598, a HK$801 spread on the same certified stone. 77 Diamonds lists it at HK$3,598. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2537508439
Dimensions4.63 × 4.42 × 2.95 mm
L/W Ratio1.05
Top View
4.63 mm4.42 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537508439
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.6%

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: Nov 6
Current: HK$3,598 HKD|Low: HK$2,320 HKD|High: HK$3,836 HKD|Avg: HK$3,136 HKD|-4.4%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2HK$2,649 HKD
Retailer 5HK$2,798 HKD
Retailer 3HK$3,143 HKD
Retailer 4HK$3,425 HKD
77 DiamondsHK$3,598 HKD

40 data points across 5 retailers

4 retailersHK$2,798 HKD to HK$3,598 HKD

A
Cheapest Retailer
-
HK$2,798 HKD
Retailer 2
-
HK$3,143 HKD
View
Price last confirmed 11 days ago
Retailer 3
-
HK$3,425 HKD
View
Price last confirmed 10 days ago
Most Expensive
B+
77 Diamonds
CUSCPFY7KRDR3 · Nov 6
HK$3,598 HKD
£362 GBP
View
3 more retailers have this diamond
Prices start from HK$2,798 HKDSave up to HK$801 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
0.51ct Cushion
HK$2,798 HKD