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Oval|Natural|IGI

5.99ct G SI1 Oval Natural Diamond

VG • G/SI1 • IGI 747581979

Shape and cutting style on the report: Oval brilliant

Certificate IGI 747581979

Diamond specifications and retailer prices

From £63,426 GBP
$84,984 USD
As of October 30, 2026
Save £35,599 GBP (36%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £99,025 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 5.99ct natural oval diamond

This 5.99ct natural oval sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 747581979. Listed at 13 retailers as of October 30, 2026, with prices from £63,426 to £99,025, a £35,599 spread on the same certified stone. MOH London lists it at £99,025. 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

5.99
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle39.2°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 747581979
Dimensions14.09 × 10.09 × 6.43 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Top View
14.09 mm10.09 mm5.99 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 747581979
Side View
Table 56.0%Crown 39.2°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 63.7%

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: Oct 30
Current: £99,025 GBP|Low: £64,163 GBP|High: £100,219 GBP|Avg: £74,857 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3£64,552 GBP
Retailer 8£66,048 GBP
Retailer 2£66,917 GBP
Retailer 9£72,904 GBP
Retailer 7£75,820 GBP
Retailer 5£76,277 GBP
Retailer 4£76,718 GBP
Retailer 6£78,737 GBP
MOH London£99,025 GBP

33 data points across 9 retailers

13 retailers£63,426 GBP to £99,025 GBP

A
Cheapest Retailer
-
£63,426 GBP
$84,984 USD
A
Retailer 2
-
£64,156 GBP
$85,962 USD
View
Final sale: no returns
A
Retailer 3
-
£64,552 GBP
View
A
Retailer 4
-
£66,048 GBP
$88,497 USD
View
A
Retailer 5
-
£66,917 GBP
View
A
Retailer 6
-
£67,621 GBP
$90,605 USD
View
B+
Retailer 7
-
£72,904 GBP
$97,684 USD
View
B+
Retailer 8
-
£75,820 GBP
$101,591 USD
View
A
Retailer 9
-
£76,277 GBP
€97,336 EUR
View
A
Retailer 10
-
£76,718 GBP
ZAR 1,660,651 ZAR
View
B+
Retailer 11
-
£77,999 GBP
$104,510 USD
View
B+
Retailer 12
-
£78,737 GBP
$105,499 USD
View
Most Expensive
B+
MOH London
6327D3BC4 · Nov 1
£99,025 GBP
View
12 more retailers have this diamond
Prices start from £63,426 GBPSave up to £35,599 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
5.99ct Oval
£63,426 GBP