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Radiant|Natural|GIA

0.99ct K SI2 Radiant Natural Diamond

GD • K/SI2 • GIA 2181131750

Certificate GIA 2181131750

Diamond specifications and retailer prices

From £1,444 GBP
As of November 6, 2026
Save £708 GBP (33%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,152 GBP at 77 Diamonds · As of November 7, 2026
View at 77 Diamonds

About this 0.99ct natural radiant diamond

This 0.99ct natural radiant sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2181131750. Listed at 2 retailers as of November 6, 2026, with prices from £1,444 to £2,152, a £708 spread on the same certified stone. 77 Diamonds lists it at £2,152. 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

0.99
Carat
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2181131750
Dimensions5.58 × 5.20 × 3.95 mm
L/W Ratio1.07
Top View
5.58 mm5.20 mm0.99 ctK / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 2181131750
Side View
Table 79.0%CrownGirdle: Very ThickPavilionCuletDepth 75.8%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,152 GBP|Low: £1,444 GBP|High: £2,176 GBP|Avg: £1,959 GBP|+1.4%
77 Diamonds
Retailer 2
November 7, 2026
Retailer 2£1,444 GBP
77 Diamonds£2,152 GBP

33 data points across 2 retailers

2 retailers£1,444 GBP to £2,152 GBP

B
Cheapest Retailer
-
£1,444 GBP
Most Expensive
C
77 Diamonds
RADMBMPD7JXVP · Nov 7
£2,152 GBP
View
1 more retailer has this diamond
Prices start from £1,444 GBPSave up to £708 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
0.99ct Radiant
£1,444 GBP