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Round|Natural|GIA

5.18ct I SI2 Round Natural Diamond

VG • I/SI2 • GIA 1523656372

Certificate GIA 1523656372

Diamond specifications and retailer prices

From £37,169 GBP
$49,803 USD
As of October 30, 2026
Save £27,272 GBP (42%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £64,442 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 5.18ct natural round diamond

This 5.18ct natural round sits in the over five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 1523656372. Listed at 21 retailers as of October 29, 2026, with prices from £37,169 to £64,442, a £27,272 spread on the same certified stone. MOH London lists it at £64,442. 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

5.18
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceStrong
Crown angle36°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1523656372
Dimensions11.01 × 10.97 × 6.87 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Feather, Twinning Wisp, Indented Natural, Natural
Top View
11.01 mm10.97 mm5.18 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateGIA 1523656372
Side View
Table 60.0%Crown 36°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.5%

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: £64,442 GBP|Low: £33,170 GBP|High: £64,871 GBP|Avg: £45,084 GBP|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 6£37,622 GBP
Retailer 4£38,631 GBP
Retailer 2£39,804 GBP
Retailer 3£40,735 GBP
Retailer 10£41,042 GBP
Retailer 8£42,753 GBP
Retailer 9£46,172 GBP
Retailer 5£49,799 GBP
Retailer 7£52,739 GBP
MOH London£64,442 GBP

35 data points across 10 retailers

21 retailers£37,169 GBP to £64,442 GBP

A
Cheapest Retailer
-
£37,169 GBP
$49,803 USD
A
Retailer 2
-
£37,194 GBP
$49,836 USD
View
B+
Retailer 3
-
£37,615 GBP
$50,400 USD
View
B+
Retailer 4
-
£37,622 GBP
$50,410 USD
View
Final sale: no returns
A
Retailer 5
-
£38,631 GBP
₹4,929,662 INR
View
A
Retailer 6
-
£39,804 GBP
$53,333 USD
View
A
Retailer 7
-
£40,735 GBP
View
B+
Retailer 8
-
£41,042 GBP
$54,992 USD
View
Retailer 9
-
£42,753 GBP
$57,284 USD
View
Price last confirmed 51 days ago
B+
Retailer 10
-
£42,753 GBP
$57,284 USD
View
B+
Retailer 11
-
£42,753 GBP
$57,284 USD
View
B+
Retailer 12
-
£42,837 GBP
$57,397 USD
View
Retailer 13
-
£44,463 GBP
$59,575 USD
View
Price last confirmed 50 days ago
B+
Retailer 14
-
£44,463 GBP
$59,575 USD
View
Retailer 15
-
£44,816 GBP
$60,049 USD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
£45,609 GBP
$61,111 USD
View
B+
Retailer 17
-
£46,172 GBP
$61,866 USD
View
Retailer 18
-
£46,172 GBP
$61,866 USD
View
Price last confirmed 55 days ago
B+
Retailer 19
-
£49,799 GBP
€63,548 EUR
View
Retailer 20
-
£52,739 GBP
View
Price last confirmed 31 days ago
Most Expensive
B
MOH London
5AEB34761 · Oct 29
£64,442 GBP
View
20 more retailers have this diamond
Prices start from £37,169 GBPSave up to £27,272 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
5.18ct Round
£37,169 GBP