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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 $88,365 NZD
$49,803 USD
As of October 30, 2026
Save $64,020 NZD (42%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $152,386 NZD at MOH London · As of November 1, 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 30, 2026, with prices from $88,365 to $152,386, a $64,020 spread on the same certified stone. MOH London lists it at $152,386. 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: $152,386 NZD|Low: $89,442 NZD|High: $154,222 NZD|Avg: $111,703 NZD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6$89,442 NZD
Retailer 5$91,840 NZD
Retailer 2$94,628 NZD
Retailer 4$97,654 NZD
Retailer 8$101,639 NZD
Retailer 9$109,769 NZD
Retailer 3$117,866 NZD
Retailer 7$125,379 NZD
MOH London$152,386 NZD

35 data points across 9 retailers

21 retailers$88,365 NZD to $152,386 NZD

A
Cheapest Retailer
-
$88,365 NZD
$49,803 USD
A
Retailer 2
-
$88,424 NZD
$49,836 USD
View
B+
Retailer 3
-
$89,425 NZD
$50,400 USD
View
B+
Retailer 4
-
$89,442 NZD
$50,410 USD
View
Final sale: no returns
A
Retailer 5
-
$91,840 NZD
₹4,929,662 INR
View
A
Retailer 6
-
$94,628 NZD
$53,333 USD
View
B+
Retailer 7
-
$97,572 NZD
$54,992 USD
View
A
Retailer 8
-
$97,654 NZD
£43,337 GBP
View
Retailer 9
-
$101,639 NZD
$57,284 USD
View
Price last confirmed 52 days ago
B+
Retailer 10
-
$101,639 NZD
$57,284 USD
View
B+
Retailer 11
-
$101,639 NZD
$57,284 USD
View
B+
Retailer 12
-
$101,840 NZD
$57,397 USD
View
Retailer 13
-
$105,704 NZD
$59,575 USD
View
Price last confirmed 51 days ago
B+
Retailer 14
-
$105,704 NZD
$59,575 USD
View
Retailer 15
-
$106,545 NZD
$60,049 USD
View
Price last confirmed 9 days ago
B+
Retailer 16
-
$108,429 NZD
$61,111 USD
View
B+
Retailer 17
-
$109,769 NZD
$61,866 USD
View
Retailer 18
-
$109,769 NZD
$61,866 USD
View
Price last confirmed 56 days ago
B+
Retailer 19
-
$117,866 NZD
€63,266 EUR
View
Retailer 20
-
$125,379 NZD
£55,641 GBP
View
Price last confirmed 32 days ago
Most Expensive
B
MOH London
5AEB34761 · Nov 1
$152,386 NZD
£67,626 GBP
View
20 more retailers have this diamond
Prices start from $88,365 NZDSave up to $64,020 NZD

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
$88,365 NZD