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Radiant|Natural|GIA

1.20ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 5553890587

Certificate GIA 5553890587

Diamond specifications and retailer prices

From £1,860 GBP
HK$19,500 HKD
As of November 1, 2026
Save £2,744 GBP (60%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £4,604 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-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 5553890587. Listed at 23 retailers as of October 28, 2026, with prices from £1,860 to £4,604, a £2,744 spread on the same certified stone. Queensmith lists it at £4,604. 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

1.20
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553890587
Dimensions7.11 × 5.38 × 3.69 mm
L/W Ratio1.32
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.11 mm5.38 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553890587
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £4,604 GBP|Low: £1,841 GBP|High: £4,694 GBP|Avg: £2,763 GBP|+0.7%
Queensmith
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
Retailer 15
Retailer 16
Retailer 17
November 3, 2026
Retailer 15£1,860 GBP
Retailer 11£1,946 GBP
Retailer 5£2,209 GBP
Retailer 7£2,241 GBP
Retailer 3£2,272 GBP
Retailer 16£2,370 GBP
Retailer 12£2,402 GBP
Retailer 9£2,550 GBP
Retailer 17£2,570 GBP
Retailer 2£2,573 GBP
Retailer 6£2,582 GBP
Retailer 4£2,631 GBP
Retailer 13£2,882 GBP
Retailer 8£2,942 GBP
Retailer 14£3,027 GBP
Retailer 10£4,118 GBP
Queensmith£4,604 GBP

24 data points across 17 retailers

23 retailers£1,860 GBP to £4,604 GBP

A
Cheapest Retailer
-
£1,860 GBP
HK$19,500 HKD
A
Retailer 2
-
£1,946 GBP
₹248,719 INR
View
B+
Retailer 3
-
£2,209 GBP
$2,964 USD
View
B+
Retailer 4
-
£2,241 GBP
SGD 4,063 SGD
View
B+
Retailer 5
-
£2,272 GBP
$3,049 USD
View
Final sale: no returns
B+
Retailer 6
-
£2,370 GBP
$3,180 USD
View
B+
Retailer 7
-
£2,371 GBP
$3,182 USD
View
B+
Retailer 8
-
£2,402 GBP
View
B+
Retailer 9
-
£2,513 GBP
A$5,188 AUD
View
Retailer 10
-
£2,550 GBP
$3,422 USD
View
Price last confirmed 16 days ago
Retailer 11
-
£2,550 GBP
$3,422 USD
View
Price last confirmed 18 days ago
B+
Retailer 12
-
£2,570 GBP
$3,448 USD
View
B+
Retailer 13
-
£2,573 GBP
View
Retailer 14
-
£2,582 GBP
SGD 4,682 SGD
View
Price last confirmed 7 days ago
B+
Retailer 15
-
£2,631 GBP
$3,530 USD
View
Retailer 16
-
£2,648 GBP
$3,553 USD
View
Price last confirmed 17 days ago
Retailer 17
-
£2,747 GBP
A$5,671 AUD
View
Price last confirmed 30 days ago
B+
Retailer 18
-
£2,882 GBP
€3,683 EUR
View
Retailer 19
-
£2,942 GBP
$3,948 USD
View
Price last confirmed 15 days ago
B+
Retailer 20
-
£3,027 GBP
ZAR 65,619 ZAR
View
B
Retailer 21
-
£4,118 GBP
View
Retailer 22
-
£4,442 GBP
$5,961 USD
View
Price last confirmed 16 days ago
Most Expensive
B
Queensmith
5553890587 · Oct 28
£4,604 GBP
View
22 more retailers have this diamond
Prices start from £1,860 GBPSave up to £2,744 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
1.20ct Radiant
£1,860 GBP