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Oval|Natural|GIA

1.01ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 1555867759

Certificate GIA 1555867759

Diamond specifications and retailer prices

From £1,815 GBP
SGD 3,286 SGD
As of October 31, 2026
Save £1,574 GBP (46%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,389 GBP at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 1.01ct natural oval diamond

This 1.01ct natural oval sits in the classic one-carat band, graded D 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 1555867759. Listed at 15 retailers as of October 30, 2026, with prices from £1,815 to £3,389, a £1,574 spread on the same certified stone. Helzberg Diamonds lists it at £3,389. 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

1.01
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.26°
Pavilion angle40.31°
OriginNatural
Grading LabGIA
CertificateGIA 1555867759
Dimensions7.83 × 5.57 × 3.49 mm
L/W Ratio1.41
Culet sizeNone
Top View
7.83 mm5.57 mm1.01 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555867759
Side View
Table 60.0%Crown 40.26°Girdle: MED-THKPavilion 40.31°Culet: NoneDepth 62.6%

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: £3,389 GBP|Low: £1,815 GBP|High: £3,599 GBP|Avg: £2,452 GBP|-5.8%
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
Retailer 14
October 31, 2026
Retailer 10£1,815 GBP
Retailer 5£1,894 GBP
Retailer 8£1,937 GBP
Retailer 9£1,956 GBP
Retailer 11£1,971 GBP
Retailer 7£2,127 GBP
Retailer 4£2,146 GBP
Retailer 12£2,308 GBP
Retailer 14£2,343 GBP
Retailer 3£2,391 GBP
Retailer 2£2,530 GBP
Retailer 6£3,004 GBP
Retailer 13£3,242 GBP
Helzberg Diamonds£3,389 GBP

38 data points across 14 retailers

15 retailers£1,815 GBP to £3,389 GBP

A
Cheapest Retailer
-
£1,815 GBP
SGD 3,286 SGD
A
Retailer 2
-
£1,894 GBP
$2,538 USD
View
A
Retailer 3
-
£1,937 GBP
$2,596 USD
View
A
Retailer 4
-
£1,956 GBP
$2,621 USD
View
A
Retailer 5
-
£1,971 GBP
$2,641 USD
View
A
Retailer 6
-
£2,127 GBP
View
A
Retailer 7
-
£2,146 GBP
SGD 3,886 SGD
View
B+
Retailer 8
-
£2,308 GBP
$3,093 USD
View
B+
Retailer 9
-
£2,340 GBP
$3,136 USD
View
B+
Retailer 10
-
£2,343 GBP
$3,140 USD
View
B+
Retailer 11
-
£2,391 GBP
$3,203 USD
View
B+
Retailer 12
-
£2,530 GBP
€3,228 EUR
View
B+
Retailer 13
-
£3,004 GBP
$4,025 USD
View
B+
Retailer 14
-
£3,242 GBP
$4,344 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLOMNNLP · Oct 30
£3,389 GBP
$4,541 USD
View
14 more retailers have this diamond
Prices start from £1,815 GBPSave up to £1,574 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.

A
1.01ct Oval
£1,815 GBP