CaratHunter
Plans
Cushion|Natural|GIA

0.51ct H SI1 Cushion Natural Diamond

GD • H/SI1 • GIA 2537508439

Certificate GIA 2537508439

Diamond specifications and retailer prices

From $458 SGD
As of November 6, 2026
Save $131 SGD (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $588 SGD 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 $458 to $588, a $131 spread on the same certified stone. 77 Diamonds lists it at $588. 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: $588 SGD|Low: $379 SGD|High: $627 SGD|Avg: $513 SGD|-4.4%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$433 SGD
Retailer 5$458 SGD
Retailer 3$514 SGD
Retailer 4$560 SGD
77 Diamonds$588 SGD

40 data points across 5 retailers

4 retailers$458 SGD to $588 SGD

A
Cheapest Retailer
-
$458 SGD
Retailer 2
-
$514 SGD
View
Price last confirmed 11 days ago
Retailer 3
-
$560 SGD
View
Price last confirmed 10 days ago
Most Expensive
B+
77 Diamonds
CUSCPFY7KRDR3 · Nov 6
$588 SGD
£362 GBP
View
3 more retailers have this diamond
Prices start from $458 SGDSave up to $131 SGD

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
$458 SGD