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Cushion|Natural|GIA

1.80ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 5231935650

Certificate GIA 5231935650

Diamond specifications and retailer prices

From £3,095 GBP
HK$32,400 HKD
As of November 1, 2026
Save £3,618 GBP (54%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £6,714 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.8ct natural cushion diamond

This 1.8ct natural cushion sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231935650. Listed at 9 retailers as of November 1, 2026, with prices from £3,095 to £6,714, a £3,618 spread on the same certified stone. MOH London lists it at £6,714. 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

1.80
Carat
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle36.84°
OriginNatural
Grading LabGIA
CertificateGIA 5231935650
Dimensions6.84 × 6.81 × 4.70 mm
L/W Ratio1.00
Top View
6.84 mm6.81 mm1.80 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231935650
Side View
Table 61.0%CrownGirdle: STK-VTKPavilion 36.84°Culet: NoneDepth 69.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £6,714 GBP|Low: £3,067 GBP|High: £6,811 GBP|Avg: £4,409 GBP|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 4£3,095 GBP
Retailer 3£3,708 GBP
Retailer 7£3,937 GBP
Retailer 2£4,028 GBP
Retailer 8£4,156 GBP
Retailer 6£4,445 GBP
Retailer 5£4,805 GBP
MOH London£6,714 GBP

42 data points across 8 retailers

9 retailers£3,095 GBP to £6,714 GBP

A
Cheapest Retailer
-
£3,095 GBP
HK$32,400 HKD
A
Retailer 2
-
£3,708 GBP
$4,968 USD
View
A
Retailer 3
-
£3,937 GBP
SGD 7,129 SGD
View
A
Retailer 4
-
£4,028 GBP
View
A
Retailer 5
-
£4,156 GBP
$5,568 USD
View
Final sale: no returns
A
Retailer 6
-
£4,443 GBP
A$9,158 AUD
View
A
Retailer 7
-
£4,445 GBP
$5,956 USD
View
A
Retailer 8
-
£4,805 GBP
€6,131 EUR
View
Most Expensive
B+
MOH London
50A3EE518 · Nov 1
£6,714 GBP
View
8 more retailers have this diamond
Prices start from £3,095 GBPSave up to £3,618 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.

A
1.80ct Cushion
£3,095 GBP