Oval|Natural|GIA

1.50ct F SI1 Oval Natural Diamond

ID • F/SI1 • GIA 6551643708

Certificate GIA 6551643708

Diamond specifications and retailer prices

From $7,454 USD
£5,870 GBP
As of October 28, 2026
Save $2,616 USD (26%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $13,549 USD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct natural oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551643708. Listed at 17 retailers as of October 27, 2026, with a 35% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
F
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551643708
Dimensions8.81 × 6.31 × 4.00 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Indented Natural, Needle, Pinpoint, Cloud, Natural
Top View
8.81 mm6.31 mm1.50 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551643708
Side View
Table 63.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 63.3%

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 28
Current: $7,454 USD|Low: $6,070 USD|High: $11,426 USD|Avg: $7,934 USD|-1.3%
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
Retailer 14
October 28, 2026
Retailer 4$6,164 USD
Retailer 11$6,401 USD
Retailer 10$6,774 USD
Retailer 6$6,775 USD
Retailer 5$6,785 USD
Retailer 2$7,275 USD
Retailer 1$7,454 USD
Retailer 8$7,603 USD
Retailer 3$7,760 USD
Retailer 14$7,763 USD
Retailer 9$8,804 USD
Retailer 7$9,864 USD
Retailer 12$10,070 USD
Retailer 13$11,306 USD

31 data points across 14 retailers

17 retailers$7,454 USD to $10,070 USD

Retailer 1
-
$6,164 USD
Price last confirmed 12 days ago
Retailer 2
-
$6,401 USD
View
Price last confirmed 8 days ago
Retailer 3
-
$6,785 USD
View
Price last confirmed 6 days ago
Retailer 4
-
$7,214 USD
View
Price last confirmed 8 days ago
Retailer 5
-
$7,275 USD
View
Price last confirmed 9 days ago
Retailer 6
-
$7,339 USD
View
Price last confirmed 44 days ago
B+
Retailer 7
-
$7,454 USD
£5,870 GBP
View
B+
Retailer 8
-
$7,603 USD
£5,987 GBP
View
Price last confirmed 7 days ago
Retailer 9
-
$7,760 USD
View
Price last confirmed 17 days ago
Retailer 10
-
$7,763 USD
A$11,943 AUD
View
Price last confirmed 12 days ago
B+
Retailer 11
-
$8,191 USD
View
Price last confirmed 7 days ago
Retailer 12
-
$8,468 USD
View
Price last confirmed 45 days ago
Retailer 13
-
$8,804 USD
€8,385 EUR
View
Price last confirmed 7 days ago
B
Retailer 14
-
$9,864 USD
ZAR 159,349 ZAR
View
Price last confirmed 7 days ago
B
Retailer 15
-
$10,070 USD
View
Retailer 16
-
$11,306 USD
£8,902 GBP
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
6fce348c-e558-47a0-864b-183a4a9177ac · Sep 19
$13,549 USD
View
Price last confirmed 44 days ago
16 more retailers have this diamond
Prices start from $7,454 USDSave up to $2,616 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+
1.50ct Oval
$7,454 USD