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Radiant|Natural|GIA

1.00ct D SI2 Radiant Natural Diamond

ID • D/SI2 • GIA 1545627178

Certificate GIA 1545627178

Diamond specifications and retailer prices

From £1,750 GBP
As of November 6, 2026
Save £1,455 GBP (45%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,738 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545627178. Listed at 19 retailers as of November 6, 2026, with a 83% 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

1.00
Carat
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1545627178
Dimensions6.80 × 4.91 × 3.37 mm
L/W Ratio1.38
Culet sizeNone
Top View
6.80 mm4.91 mm1.00 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1545627178
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.6%

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 6
Current: £3,738 GBP|Low: £1,603 GBP|High: £3,763 GBP|Avg: £2,404 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 7£1,750 GBP
Retailer 4£1,763 GBP
Retailer 5£2,014 GBP
Retailer 6£2,184 GBP
Retailer 2£2,353 GBP
Retailer 8£2,581 GBP
Retailer 3£2,589 GBP
Retailer 9£2,646 GBP
MOH London£3,738 GBP

42 data points across 9 retailers

19 retailers£1,750 GBP to £3,205 GBP

A
Cheapest Retailer
-
£1,750 GBP
A
Retailer 2
-
£1,763 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,804 GBP
View
A
Retailer 4
-
£1,811 GBP
View
A
Retailer 5
-
£1,901 GBP
View
Retailer 6
-
£2,014 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£2,184 GBP
View
B+
Retailer 8
-
£2,185 GBP
View
B+
Retailer 9
-
£2,185 GBP
View
B+
Retailer 10
-
£2,202 GBP
View
B+
Retailer 11
-
£2,301 GBP
View
B+
Retailer 12
-
£2,301 GBP
View
B+
Retailer 13
-
£2,353 GBP
View
B+
Retailer 14
-
£2,376 GBP
View
Retailer 15
-
£2,581 GBP
View
Price last confirmed 15 days ago
B+
Retailer 16
-
£2,589 GBP
View
B+
Retailer 17
-
£2,696 GBP
View
B
Retailer 18
-
£3,205 GBP
View
Most Expensive
MOH London
D538187AC · Oct 29
£3,738 GBP
View
Price last confirmed 8 days ago
18 more retailers have this diamond
Prices start from £1,750 GBPSave up to £1,455 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
1.00ct Radiant
£1,750 GBP