CaratHunter
Plans
Radiant|Natural|GIA

1.20ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 5546336555

Certificate GIA 5546336555

Diamond specifications and retailer prices

From £1,395 GBP
HK$14,600 HKD
As of November 1, 2026
Save £1,831 GBP (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,848 GBP at NZ Jewellers · As of October 17, 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 5546336555. Listed at 20 retailers as of November 1, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5546336555
Dimensions6.87 × 5.41 × 3.89 mm
L/W Ratio1.27
Top View
6.87 mm5.41 mm1.20 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546336555
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.9%

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: £1,689 GBP|Low: £1,385 GBP|High: £3,264 GBP|Avg: £1,993 GBP|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 8£1,395 GBP
Retailer 6£1,473 GBP
Retailer 11£1,630 GBP
Retailer 1£1,689 GBP
Retailer 2£1,943 GBP
Retailer 12£1,945 GBP
Retailer 5£1,956 GBP
Retailer 3£2,000 GBP
Retailer 9£2,263 GBP
Retailer 4£2,279 GBP
Retailer 10£2,298 GBP
Retailer 7£3,225 GBP

33 data points across 12 retailers

20 retailers£1,395 GBP to £3,225 GBP

A
Cheapest Retailer
-
£1,395 GBP
HK$14,600 HKD
A
Retailer 2
-
£1,473 GBP
₹188,024 INR
View
A
Retailer 3
-
£1,630 GBP
SGD 2,952 SGD
View
A
Retailer 4
-
£1,689 GBP
$2,263 USD
View
Final sale: no returns
A
Retailer 5
-
£1,740 GBP
$2,332 USD
View
A
Retailer 6
-
£1,743 GBP
$2,335 USD
View
Retailer 7
-
£1,840 GBP
$2,466 USD
View
Price last confirmed 14 days ago
Retailer 8
-
£1,840 GBP
$2,466 USD
View
Price last confirmed 17 days ago
B+
Retailer 9
-
£1,925 GBP
A$3,968 AUD
View
Retailer 10
-
£1,926 GBP
$2,580 USD
View
Price last confirmed 16 days ago
B+
Retailer 11
-
£1,943 GBP
SGD 3,519 SGD
View
B+
Retailer 12
-
£1,945 GBP
$2,607 USD
View
B+
Retailer 13
-
£1,956 GBP
View
B+
Retailer 14
-
£2,000 GBP
$2,680 USD
View
Retailer 15
-
£2,124 GBP
$2,846 USD
View
Price last confirmed 14 days ago
B+
Retailer 16
-
£2,263 GBP
ZAR 48,977 ZAR
View
Retailer 17
-
£2,279 GBP
A$4,698 AUD
View
Price last confirmed 25 days ago
B+
Retailer 18
-
£2,298 GBP
€2,933 EUR
View
B
Retailer 19
-
£3,225 GBP
View
Most Expensive
NZ Jewellers
c0e566b7-b3ad-47b4-b208-21f20e29ae78 · Oct 17
£3,848 GBP
$5,156 USD
View
Price last confirmed 15 days ago
19 more retailers have this diamond
Prices start from £1,395 GBPSave up to £1,831 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
£1,395 GBP