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Cushion|Natural|GIA

1.81ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6475646979

Certificate GIA 6475646979

Diamond specifications and retailer prices

From £4,053 GBP
As of November 4, 2026
Save £3,485 GBP (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £7,538 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.81ct natural cushion diamond

This 1.81ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6475646979. Listed at 9 retailers as of November 4, 2026, with prices from £4,053 to £7,538, a £3,485 spread on the same certified stone. MOH London lists it at £7,538. 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

1.81
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6475646979
Dimensions7.95 × 6.28 × 4.30 mm
L/W Ratio1.27
Top View
7.95 mm6.28 mm1.81 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6475646979
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 68.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 4
Current: £7,538 GBP|Low: £4,053 GBP|High: £7,649 GBP|Avg: £5,628 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£4,053 GBP
Retailer 4£4,872 GBP
Retailer 2£4,977 GBP
Retailer 7£5,310 GBP
Retailer 3£5,575 GBP
Retailer 8£5,656 GBP
Retailer 5£6,260 GBP
MOH London£7,538 GBP

34 data points across 8 retailers

9 retailers£4,053 GBP to £7,538 GBP

B
Cheapest Retailer
-
£4,053 GBP
B
Retailer 2
-
£4,581 GBP
View
B
Retailer 3
-
£4,872 GBP
View
B
Retailer 4
-
£4,977 GBP
View
B
Retailer 5
-
£5,310 GBP
View
B
Retailer 6
-
£5,575 GBP
View
Retailer 7
-
£5,656 GBP
View
Price last confirmed 14 days ago
B
Retailer 8
-
£6,260 GBP
View
Most Expensive
B
MOH London
FADBF7DBF · Nov 4
£7,538 GBP
View
8 more retailers have this diamond
Prices start from £4,053 GBPSave up to £3,485 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
1.81ct Cushion
£4,053 GBP