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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 $49,803 USD
As of October 30, 2026
Save $36,542 USD (42%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $86,345 USD 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 $49,803 to $86,345, a $36,542 spread on the same certified stone. MOH London lists it at $86,345. 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
Color
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: $86,345 USD|Low: $44,444 USD|High: $86,920 USD|Avg: $60,407 USD|-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$50,410 USD
Retailer 4$51,761 USD
Retailer 2$53,333 USD
Retailer 3$54,581 USD
Retailer 10$54,992 USD
Retailer 8$57,284 USD
Retailer 9$61,866 USD
Retailer 5$66,725 USD
Retailer 7$70,664 USD
MOH London$86,345 USD

35 data points across 10 retailers

21 retailers$49,803 USD to $86,345 USD

A
Cheapest Retailer
-
$49,803 USD
A
Retailer 2
-
$49,836 USD
View
B+
Retailer 3
-
$50,400 USD
View
B+
Retailer 4
-
$50,410 USD
View
Final sale: no returns
A
Retailer 5
-
$51,761 USD
₹4,929,662 INR
View
A
Retailer 6
-
$53,333 USD
View
A
Retailer 7
-
$54,581 USD
£42,977 GBP
View
B+
Retailer 8
-
$54,992 USD
View
Retailer 9
-
$57,284 USD
View
Price last confirmed 50 days ago
B+
Retailer 10
-
$57,284 USD
View
B+
Retailer 11
-
$57,284 USD
View
B+
Retailer 12
-
$57,397 USD
View
Retailer 13
-
$59,575 USD
View
Price last confirmed 50 days ago
B+
Retailer 14
-
$59,575 USD
View
Retailer 15
-
$60,049 USD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
$61,111 USD
View
B+
Retailer 17
-
$61,866 USD
View
Retailer 18
-
$61,866 USD
View
Price last confirmed 55 days ago
B+
Retailer 19
-
$66,725 USD
€63,548 EUR
View
Retailer 20
-
$70,664 USD
£55,641 GBP
View
Price last confirmed 31 days ago
Most Expensive
B
MOH London
5AEB34761 · Oct 29
$86,345 USD
£67,988 GBP
View
20 more retailers have this diamond
Prices start from $49,803 USDSave up to $36,542 USD

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
$49,803 USD