Radiant|Natural|GIA

1.20ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 5553693574

Certificate GIA 5553693574

Diamond specifications and retailer prices

From £1,922 GBP
$2,575 USD
As of October 30, 2026
Save £2,190 GBP (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,112 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553693574. Listed at 20 retailers as of October 30, 2026, with prices from £1,922 to £4,112, a £2,190 spread on the same certified stone. NZ Jewellers lists it at £4,112. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5553693574
Dimensions7.44 × 5.28 × 3.59 mm
L/W Ratio1.41
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.44 mm5.28 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5553693574
Side View
Table 68.0%CrownGirdle: STK-STKPavilionCulet: NoneDepth 68.0%

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 30
Current: £4,112 GBP|Low: £1,704 GBP|High: £4,211 GBP|Avg: £2,306 GBP|-2.3%
NZ Jewellers
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
Retailer 18
Retailer 19
October 31, 2026
Retailer 11£1,779 GBP
Retailer 9£1,922 GBP
Retailer 4£1,948 GBP
Retailer 6£2,008 GBP
Retailer 3£2,023 GBP
Retailer 10£2,032 GBP
Retailer 5£2,093 GBP
Retailer 15£2,138 GBP
Retailer 17£2,138 GBP
Retailer 16£2,221 GBP
Retailer 14£2,309 GBP
Retailer 12£2,467 GBP
Retailer 7£2,467 GBP
Retailer 8£2,639 GBP
Retailer 18£2,739 GBP
Retailer 13£2,763 GBP
Retailer 2£2,901 GBP
Retailer 19£3,969 GBP
NZ Jewellers£4,112 GBP

20 data points across 19 retailers

20 retailers£1,922 GBP to £4,112 GBP

B+
Cheapest Retailer
-
£1,922 GBP
$2,575 USD
Retailer 2
-
£1,927 GBP
$2,582 USD
View
Price last confirmed 17 days ago
Retailer 3
-
£1,927 GBP
$2,582 USD
View
Price last confirmed 12 days ago
B+
Retailer 4
-
£1,948 GBP
$2,610 USD
View
B+
Retailer 5
-
£2,008 GBP
$2,691 USD
View
B+
Retailer 6
-
£2,023 GBP
$2,711 USD
View
Retailer 7
-
£2,032 GBP
$2,723 USD
View
Price last confirmed 14 days ago
B+
Retailer 8
-
£2,093 GBP
$2,805 USD
View
B+
Retailer 9
-
£2,138 GBP
$2,865 USD
View
B+
Retailer 10
-
£2,221 GBP
$2,976 USD
View
Retailer 11
-
£2,257 GBP
A$4,652 AUD
View
Price last confirmed 25 days ago
B
Retailer 12
-
£2,309 GBP
View
B
Retailer 13
-
£2,465 GBP
$3,303 USD
View
B
Retailer 14
-
£2,467 GBP
View
B
Retailer 15
-
£2,467 GBP
$3,306 USD
View
B
Retailer 16
-
£2,639 GBP
$3,536 USD
View
B
Retailer 17
-
£2,763 GBP
€3,526 EUR
View
B
Retailer 18
-
£2,901 GBP
ZAR 62,805 ZAR
View
B
Retailer 19
-
£3,969 GBP
View
Most Expensive
B
NZ Jewellers
ffc4360b-9be8-481a-9984-68ecb1bbfab8 · Oct 30
£4,112 GBP
$5,510 USD
View
19 more retailers have this diamond
Prices start from £1,922 GBPSave up to £2,190 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
£1,922 GBP