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Radiant|Natural|GIA

1.20ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 1176751374

Certificate GIA 1176751374

Diamond specifications and retailer prices

From £2,618 GBP
A$5,397 AUD
As of October 31, 2026
Save £2,526 GBP (49%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £5,144 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1176751374. Listed at 10 retailers as of October 29, 2026, with prices from £2,618 to £5,144, a £2,526 spread on the same certified stone. MOH London lists it at £5,144. 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

1.20
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1176751374
Dimensions5.82 × 5.69 × 3.96 mm
L/W Ratio1.02
Top View
5.82 mm5.69 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1176751374
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £5,144 GBP|Low: £2,814 GBP|High: £5,305 GBP|Avg: £3,555 GBP|-2.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9£2,827 GBP
Retailer 5£2,870 GBP
Retailer 8£2,905 GBP
Retailer 7£3,212 GBP
Retailer 6£3,426 GBP
Retailer 3£3,588 GBP
Retailer 2£3,634 GBP
Retailer 4£3,949 GBP
MOH London£5,144 GBP

43 data points across 9 retailers

10 retailers£2,618 GBP to £5,144 GBP

B+
Cheapest Retailer
-
£2,618 GBP
A$5,397 AUD
B
Retailer 2
-
£2,827 GBP
$3,788 USD
View
Retailer 3
-
£2,870 GBP
$3,845 USD
View
Price last confirmed 7 days ago
B
Retailer 4
-
£2,905 GBP
$3,893 USD
View
B
Retailer 5
-
£3,212 GBP
$4,304 USD
View
Retailer 6
-
£3,426 GBP
A$7,063 AUD
View
Price last confirmed 23 days ago
B
Retailer 7
-
£3,588 GBP
View
B
Retailer 8
-
£3,634 GBP
€4,637 EUR
View
B
Retailer 9
-
£3,949 GBP
ZAR 85,474 ZAR
View
Most Expensive
B
MOH London
5E2B578B8 · Oct 29
£5,144 GBP
View
9 more retailers have this diamond
Prices start from £2,618 GBPSave up to £2,526 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+
1.20ct Radiant
£2,618 GBP