Oval|Natural|GIA

0.91ct F SI1 Oval Natural Diamond

EX • F/SI1 • GIA 1569545128

Certificate GIA 1569545128

Diamond specifications and retailer prices

From £1,300 GBP
SGD 2,357 SGD
As of October 27, 2026
Save £426 GBP (25%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,389 GBP at Helzberg Diamonds · As of October 25, 2026
View at Helzberg Diamonds

About this 0.91ct natural oval diamond

This 0.91ct natural oval sits in the just-under-one-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 1569545128. Listed at 14 retailers as of October 27, 2026, with a 33% 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

0.91
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35.68°
Pavilion angle40.66°
OriginNatural
Grading LabGIA
CertificateGIA 1569545128
Dimensions7.75 × 5.49 × 3.39 mm
L/W Ratio1.41
Culet sizeNone
Top View
7.75 mm5.49 mm0.91 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 1569545128
Side View
Table 59.0%Crown 35.68°Girdle: STK-THKPavilion 40.66°Culet: NoneDepth 61.7%

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 27
Current: £2,389 GBP|Low: £1,322 GBP|High: £2,458 GBP|Avg: £1,682 GBP|-2.8%
Helzberg Diamonds
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 27, 2026
Retailer 11£1,322 GBP
Retailer 12£1,333 GBP
Retailer 9£1,349 GBP
Retailer 5£1,353 GBP
Retailer 4£1,452 GBP
Retailer 2£1,464 GBP
Retailer 13£1,594 GBP
Retailer 8£1,672 GBP
Retailer 3£1,725 GBP
Retailer 6£1,871 GBP
Retailer 10£2,032 GBP
Retailer 7£2,180 GBP
Helzberg Diamonds£2,389 GBP

14 data points across 13 retailers

14 retailers£1,300 GBP to £1,725 GBP

B+
Cheapest Retailer
-
£1,300 GBP
SGD 2,357 SGD
Retailer 2
-
£1,322 GBP
$1,774 USD
View
Price last confirmed 9 days ago
Retailer 3
-
£1,333 GBP
$1,789 USD
View
Price last confirmed 9 days ago
B+
Retailer 4
-
£1,349 GBP
$1,810 USD
View
Retailer 5
-
£1,353 GBP
$1,815 USD
View
Price last confirmed 12 days ago
Retailer 6
-
£1,452 GBP
SGD 2,633 SGD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,464 GBP
View
Retailer 8
-
£1,594 GBP
$2,139 USD
View
Price last confirmed 9 days ago
Retailer 9
-
£1,672 GBP
$2,244 USD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£1,725 GBP
$2,315 USD
View
B
Retailer 11
-
£1,871 GBP
€2,391 EUR
View
Price last confirmed 7 days ago
Retailer 12
-
£2,032 GBP
$2,727 USD
View
Price last confirmed 7 days ago
Retailer 13
-
£2,180 GBP
$2,925 USD
View
Price last confirmed 7 days ago
Most Expensive
Helzberg Diamonds
XZRHLMPLKLHIO · Oct 25
£2,389 GBP
$3,206 USD
View
Price last confirmed 8 days ago
13 more retailers have this diamond
Prices start from £1,300 GBPSave up to £426 GBP

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+
0.91ct Oval
£1,300 GBP