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Cushion|Natural|GIA

3.51ct H SI1 Cushion Natural Diamond

GD • H/SI1 • GIA 16860130

Certificate GIA 16860130

Diamond specifications and retailer prices

From $67,790 AUD
As of November 5, 2026
Save $11,681 AUD (15%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $79,471 AUD at Yorxs · As of November 6, 2026
View at Yorxs

About this 3.51ct natural cushion diamond

This 3.51ct natural cushion sits in the three to five 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 16860130. Listed at 5 retailers as of November 5, 2026, with prices from $67,790 to $79,471, a $11,681 spread on the same certified stone. Yorxs lists it at $79,471. 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

3.51
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 16860130
Dimensions8.65 × 7.90 × 5.49 mm
L/W Ratio1.09
Top View
8.65 mm7.90 mm3.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 16860130
Side View
Table 63.0%CrownGirdle: THN-ETKPavilionCulet: NoneDepth 69.5%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $67,790 AUD|Low: $67,790 AUD|High: $79,667 AUD|Avg: $72,218 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Yorxs
November 6, 2026
Retailer 1$67,790 AUD
Retailer 2$70,500 AUD
Retailer 3$70,500 AUD
Retailer 4$72,857 AUD
Yorxs$79,471 AUD

21 data points across 5 retailers

5 retailers$67,790 AUD to $79,471 AUD

B
Cheapest Retailer
-
$67,790 AUD
B
Retailer 2
-
$70,500 AUD
View
B
Retailer 3
-
$70,500 AUD
View
B
Retailer 4
-
$72,857 AUD
View
Most Expensive
B
Yorxs
241625415 · Nov 6
$79,471 AUD
€52,004 EUR
View
4 more retailers have this diamond
Prices start from $67,790 AUDSave up to $11,681 AUD

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
3.51ct Cushion
$67,790 AUD