Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

VG • I/SI1 • GIA 2427873957

Certificate GIA 2427873957

Diamond specifications and retailer prices

From $5,658 USD
HK$44,200 HKD
As of October 31, 2026
Save $7,204 USD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,862 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2427873957. Listed at 19 retailers as of October 30, 2026, with prices from $5,658 to $12,862, a $7,204 spread on the same certified stone. NZ Jewellers lists it at $12,862. 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
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2427873957
Dimensions8.59 × 6.30 × 4.02 mm
L/W Ratio1.36
Top View
8.59 mm6.30 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2427873957
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $9,448 USD|Low: $5,390 USD|High: $10,846 USD|Avg: $7,641 USD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 6$5,658 USD
Retailer 12$6,015 USD
Retailer 2$6,430 USD
Retailer 13$6,485 USD
Retailer 4$6,967 USD
Retailer 3$7,074 USD
Retailer 7$7,250 USD
Retailer 11$7,414 USD
Retailer 5$8,038 USD
Retailer 8$8,404 USD
Retailer 9$8,473 USD
Retailer 1$9,448 USD
Retailer 10$10,775 USD

41 data points across 13 retailers

19 retailers$5,658 USD to $12,862 USD

B+
Cheapest Retailer
-
$5,658 USD
HK$44,200 HKD
B+
Retailer 2
-
$6,015 USD
View
B+
Retailer 3
-
$6,430 USD
View
Final sale: no returns
B+
Retailer 4
-
$6,431 USD
View
B+
Retailer 5
-
$6,484 USD
View
B+
Retailer 6
-
$6,485 USD
View
B
Retailer 7
-
$6,967 USD
View
B
Retailer 8
-
$7,074 USD
View
B
Retailer 9
-
$7,250 USD
£5,709 GBP
View
Retailer 10
-
$7,414 USD
A$11,406 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$7,626 USD
View
B
Retailer 12
-
$7,720 USD
View
B
Retailer 13
-
$7,720 USD
View
B
Retailer 14
-
$7,980 USD
View
B
Retailer 15
-
$8,038 USD
View
B
Retailer 16
-
$8,404 USD
€8,004 EUR
View
B
Retailer 17
-
$9,448 USD
ZAR 152,636 ZAR
View
B
Retailer 18
-
$10,775 USD
£8,484 GBP
View
Most Expensive
C
NZ Jewellers
291f68da-725f-4ac0-8c62-3671c641db6a · Oct 30
$12,862 USD
View
18 more retailers have this diamond
Prices start from $5,658 USDSave up to $7,204 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.

B+
1.51ct Oval
$5,658 USD