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Radiant|Natural|GIA

1.20ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 1559859205

Certificate GIA 1559859205

Diamond specifications and retailer prices

From £2,537 GBP
As of November 4, 2026
Save £2,045 GBP (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,582 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1559859205. Listed at 13 retailers as of November 4, 2026, with prices from £2,537 to £4,582, a £2,045 spread on the same certified stone. Wholesale Diamonds Direct lists it at £4,582. 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
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559859205
Dimensions6.93 × 5.23 × 3.61 mm
L/W Ratio1.33
Culet sizeNone
Top View
6.93 mm5.23 mm1.20 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559859205
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 69.0%

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: Nov 4
Current: £2,929 GBP|Low: £2,537 GBP|High: £4,582 GBP|Avg: £3,156 GBP|-2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
November 7, 2026
Retailer 10£2,537 GBP
Retailer 9£2,578 GBP
Retailer 7£2,599 GBP
Retailer 8£2,712 GBP
Retailer 3£2,770 GBP
Retailer 1£2,929 GBP
Retailer 11£3,228 GBP
Retailer 12£3,263 GBP
Retailer 6£3,267 GBP
Retailer 5£3,520 GBP
Retailer 4£4,279 GBP
Retailer 2£4,546 GBP
Wholesale Diamonds Direct£4,582 GBP

39 data points across 13 retailers

13 retailers£2,537 GBP to £4,582 GBP

B+
Cheapest Retailer
-
£2,537 GBP
B+
Retailer 2
-
£2,578 GBP
View
B+
Retailer 3
-
£2,599 GBP
View
B+
Retailer 4
-
£2,712 GBP
View
B+
Retailer 5
-
£2,770 GBP
View
B+
Retailer 6
-
£2,929 GBP
View
B+
Retailer 7
-
£3,228 GBP
View
B+
Retailer 8
-
£3,263 GBP
View
B+
Retailer 9
-
£3,267 GBP
View
B+
Retailer 10
-
£3,520 GBP
View
B
Retailer 11
-
£4,279 GBP
View
B
Retailer 12
-
£4,546 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
264707049 · Nov 6
£4,582 GBP
$6,133 USD
View
12 more retailers have this diamond
Prices start from £2,537 GBPSave up to £2,045 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
£2,537 GBP