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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 £34,799 GBP
As of November 5, 2026
Save £5,996 GBP (15%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £40,795 GBP 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 £34,799 to £40,795, a £5,996 spread on the same certified stone. Yorxs lists it at £40,795. 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

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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: £34,799 GBP|Low: £34,799 GBP|High: £40,896 GBP|Avg: £37,072 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Yorxs
November 6, 2026
Retailer 1£34,799 GBP
Retailer 2£36,190 GBP
Retailer 3£36,190 GBP
Retailer 4£37,400 GBP
Yorxs£40,795 GBP

21 data points across 5 retailers

5 retailers£34,799 GBP to £40,795 GBP

B
Cheapest Retailer
-
£34,799 GBP
B
Retailer 2
-
£36,190 GBP
View
B
Retailer 3
-
£36,190 GBP
View
B
Retailer 4
-
£37,400 GBP
View
Most Expensive
B
Yorxs
241625415 · Nov 6
£40,795 GBP
€52,004 EUR
View
4 more retailers have this diamond
Prices start from £34,799 GBPSave up to £5,996 GBP

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
£34,799 GBP