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Oval|Natural|IGI

1.51ct I IF Oval Natural Diamond

VG • I/IF • IGI 851622831

Certificate IGI 851622831

Diamond specifications and retailer prices

From $6,142 AUD
SGD 5,830 SGD
As of October 31, 2026
Save $6,407 AUD (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $12,549 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI 851622831. Listed at 11 retailers as of October 31, 2026, with prices from $6,142 to $12,549, a $6,407 spread on the same certified stone. MOH London lists it at $12,549. 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

1.51
Carat
I
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabIGI
CertificateIGI 851622831
Dimensions8.99 × 6.24 × 3.99 mm
L/W Ratio1.44
Top View
8.99 mm6.24 mm1.51 ctI / IF
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 851622831
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.9%

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 31
Current: $12,549 AUD|Low: $7,161 AUD|High: $12,549 AUD|Avg: $8,536 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5$7,161 AUD
Retailer 8$7,477 AUD
Retailer 2$7,574 AUD
Retailer 10$7,706 AUD
Retailer 6$7,944 AUD
Retailer 4$8,034 AUD
Retailer 7$8,517 AUD
Retailer 3$9,082 AUD
Retailer 9$10,466 AUD
MOH London$12,549 AUD

6 data points across 10 retailers

11 retailers$6,142 AUD to $12,549 AUD

A
Cheapest Retailer
-
$6,142 AUD
SGD 5,830 SGD
A
Retailer 2
-
$7,161 AUD
$5,030 USD
View
A
Retailer 3
-
$7,477 AUD
$5,252 USD
View
A
Retailer 4
-
$7,574 AUD
£4,189 GBP
View
A
Retailer 5
-
$7,706 AUD
$5,413 USD
View
A
Retailer 6
-
$7,944 AUD
$5,580 USD
View
A
Retailer 7
-
$8,034 AUD
£4,443 GBP
View
A
Retailer 8
-
$8,517 AUD
$5,983 USD
View
A
Retailer 9
-
$9,082 AUD
€6,076 EUR
View
B+
Retailer 10
-
$10,466 AUD
ZAR 118,764 ZAR
View
Most Expensive
B+
MOH London
A4C05C9EC · Nov 1
$12,549 AUD
£6,941 GBP
View
10 more retailers have this diamond
Prices start from $6,142 AUDSave up to $6,407 AUD

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
1.51ct Oval
$6,142 AUD