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Radiant|Natural|GIA

0.91ct I SI1 Radiant Natural Diamond

GD • I/SI1 • GIA 15889065

Certificate GIA 15889065

Diamond specifications and retailer prices

From £1,793 GBP
€2,288 EUR
As of October 29, 2026
Save £1,644 GBP (48%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,437 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.91ct natural radiant diamond

This 0.91ct natural radiant sits in the just-under-one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 15889065. Listed at 5 retailers as of October 29, 2026, with prices from £1,793 to £3,437, a £1,644 spread on the same certified stone. MOH London lists it at £3,437. 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

0.91
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 15889065
Dimensions5.52 × 4.92 × 3.89 mm
L/W Ratio1.12
Key to symbols
Indented Natural, Crystal
Top View
5.52 mm4.92 mm0.91 ctI / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceMedium
CertificateGIA 15889065
Side View
Table 68.0%CrownGirdle: VTN-ETKPavilionCulet: NoneDepth 79.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £3,437 GBP|Low: £2,016 GBP|High: £3,474 GBP|Avg: £2,495 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2£2,079 GBP
Retailer 4£2,198 GBP
Retailer 3£2,291 GBP
MOH London£3,437 GBP

39 data points across 4 retailers

5 retailers£1,793 GBP to £3,437 GBP

B
Cheapest Retailer
-
£1,793 GBP
€2,288 EUR
C
Retailer 2
-
£2,079 GBP
View
Retailer 3
-
£2,198 GBP
A$4,530 AUD
View
Price last confirmed 25 days ago
C
Retailer 4
-
£2,291 GBP
€2,923 EUR
View
Most Expensive
C
MOH London
EFC2CA9DC · Nov 1
£3,437 GBP
View
4 more retailers have this diamond
Prices start from £1,793 GBPSave up to £1,644 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
0.91ct Radiant
£1,793 GBP