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Round|Natural|IGI

0.90ct M SI2 Round Natural Diamond

VG • M/SI2 • IGI 659451213

Shape and cutting style on the report: Round brilliant

Certificate IGI 659451213

Diamond specifications and retailer prices

From £544 GBP
As of November 5, 2026
Save £1,161 GBP (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,705 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.9ct natural round diamond

This 0.9ct natural round sits in the just-under-one-carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 659451213. Listed at 8 retailers as of November 5, 2026, with prices from £544 to £1,705, a £1,161 spread on the same certified stone. NZ Jewellers lists it at £1,705. 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

0.90
Carat
M
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 659451213
Dimensions6.03 × 6.07 × 3.89 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.03 mm6.07 mm0.90 ctM / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 659451213
Side View
Table 55.0%Crown 36.7°Girdle: STK-THKPavilion 40.6°Culet: NoneDepth 64.4%

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 5
Current: £1,705 GBP|Low: £522 GBP|High: £1,705 GBP|Avg: £740 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 3£544 GBP
Retailer 6£563 GBP
Retailer 4£642 GBP
Retailer 7£675 GBP
Retailer 5£746 GBP
Retailer 2£765 GBP
NZ Jewellers£1,705 GBP

18 data points across 7 retailers

8 retailers£544 GBP to £1,705 GBP

Retailer 1
-
£522 GBP
Price last confirmed 36 days ago
Retailer 2
-
£544 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£544 GBP
View
B+
Retailer 4
-
£627 GBP
View
B+
Retailer 5
-
£642 GBP
View
B
Retailer 6
-
£765 GBP
View
Retailer 7
-
£1,705 GBP
View
Price last confirmed 28 days ago
Most Expensive
C
NZ Jewellers
cef54ef4-5750-47a0-b4d8-4e4d2126be15 · Nov 5
£1,705 GBP
$2,295 USD
View
7 more retailers have this diamond
Prices start from £544 GBPSave up to £1,161 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+
0.90ct Round
£544 GBP