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Radiant|Natural|GIA

1.81ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 6223818491

Certificate GIA 6223818491

Diamond specifications and retailer prices

From £4,340 GBP
$5,815 USD
As of October 30, 2026
Save £3,315 GBP (43%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £7,655 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.81ct natural radiant diamond

This 1.81ct natural radiant sits in the one-and-a-half to two carat band, graded G 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 6223818491. Listed at 14 retailers as of October 30, 2026, with prices from £4,340 to £7,655, a £3,315 spread on the same certified stone. MOH London lists it at £7,655. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.7°
Pavilion angle39.1°
OriginNatural
Grading LabGIA
CertificateGIA 6223818491
Dimensions6.63 × 6.55 × 4.43 mm
L/W Ratio1.01
Top View
6.63 mm6.55 mm1.81 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6223818491
Side View
Table 64.0%Crown 39.7°Girdle: ThickPavilion 39.1°Culet: NoneDepth 67.7%

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: Oct 30
Current: £7,655 GBP|Low: £4,340 GBP|High: £8,551 GBP|Avg: £5,673 GBP|-9.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 14£4,340 GBP
Retailer 4£4,593 GBP
Retailer 9£4,594 GBP
Retailer 13£4,616 GBP
Retailer 12£4,897 GBP
Retailer 2£5,179 GBP
Retailer 10£5,331 GBP
Retailer 3£5,478 GBP
Retailer 5£5,500 GBP
Retailer 6£5,500 GBP
Retailer 8£5,664 GBP
Retailer 11£5,687 GBP
Retailer 7£6,749 GBP
MOH London£7,655 GBP

44 data points across 14 retailers

14 retailers£4,340 GBP to £7,655 GBP

A
Cheapest Retailer
-
£4,340 GBP
$5,815 USD
A
Retailer 2
-
£4,593 GBP
$6,154 USD
View
Final sale: no returns
A
Retailer 3
-
£4,594 GBP
$6,155 USD
View
A
Retailer 4
-
£4,616 GBP
$6,185 USD
View
A
Retailer 5
-
£4,897 GBP
$6,561 USD
View
A
Retailer 6
-
£5,179 GBP
View
Retailer 7
-
£5,331 GBP
A$10,990 AUD
View
Price last confirmed 10 days ago
A
Retailer 8
-
£5,478 GBP
$7,341 USD
View
A
Retailer 9
-
£5,500 GBP
$7,370 USD
View
A
Retailer 10
-
£5,500 GBP
$7,370 USD
View
A
Retailer 11
-
£5,664 GBP
View
A
Retailer 12
-
£5,687 GBP
$7,620 USD
View
B+
Retailer 13
-
£6,749 GBP
ZAR 146,080 ZAR
View
Most Expensive
B+
MOH London
D052638C8 · Nov 1
£7,655 GBP
View
13 more retailers have this diamond
Prices start from £4,340 GBPSave up to £3,315 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
1.81ct Radiant
£4,340 GBP