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Cushion|Natural|GIA

3.51ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1545897248

Certificate GIA 1545897248

Diamond specifications and retailer prices

From $76,356 AUD
As of November 6, 2026
Save $50,345 AUD (40%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $126,701 AUD at MOH London · As of November 4, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545897248. Listed at 9 retailers as of November 4, 2026, with prices from $76,356 to $126,701, a $50,345 spread on the same certified stone. MOH London lists it at $126,701. 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.12°
OriginNatural
Grading LabGIA
CertificateGIA 1545897248
Dimensions10.24 × 8.19 × 5.71 mm
L/W Ratio1.25
Key to symbols
Cloud, Crystal, Needle
Top View
10.24 mm8.19 mm3.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545897248
Side View
Table 66.0%Crown 33.12°Girdle: MED-THKPavilionCulet: NoneDepth 69.7%

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 6
Current: $126,701 AUD|Low: $77,245 AUD|High: $128,572 AUD|Avg: $96,598 AUD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 7$77,841 AUD
Retailer 3$78,894 AUD
Retailer 2$81,246 AUD
Retailer 4$93,087 AUD
Retailer 5$98,141 AUD
Retailer 6$104,723 AUD
MOH London$126,701 AUD

39 data points across 7 retailers

9 retailers$76,356 AUD to $126,701 AUD

B
Cheapest Retailer
-
$76,356 AUD
Retailer 2
-
$77,841 AUD
View
Price last confirmed 34 days ago
B
Retailer 3
-
$78,894 AUD
View
B
Retailer 4
-
$78,894 AUD
View
B
Retailer 5
-
$81,246 AUD
View
B
Retailer 6
-
$93,087 AUD
View
B
Retailer 7
-
$98,141 AUD
View
B
Retailer 8
-
$104,723 AUD
View
Most Expensive
B
MOH London
00FC2E6AE · Nov 4
$126,701 AUD
£68,548 GBP
View
8 more retailers have this diamond
Prices start from $76,356 AUDSave up to $50,345 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
$76,356 AUD