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Oval|Natural|GIA

1.00ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 1558951120

Certificate GIA 1558951120

Diamond specifications and retailer prices

From $2,198 USD
SGD 2,970 SGD
As of October 29, 2026
Save $1,904 USD (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,102 USD at Helzberg Diamonds · As of October 28, 2026
View at Helzberg Diamonds

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded E 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 1558951120. Listed at 14 retailers as of October 28, 2026, with prices from $2,198 to $4,102, a $1,904 spread on the same certified stone. Helzberg Diamonds lists it at $4,102. 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

1.00
Carat
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.81°
Pavilion angle40.7°
OriginNatural
Grading LabGIA
CertificateGIA 1558951120
Dimensions7.89 × 5.68 × 3.54 mm
L/W Ratio1.39
Culet sizeNone
Top View
7.89 mm5.68 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558951120
Side View
Table 61.0%Crown 39.81°Girdle: THN-THKPavilion 40.7°Culet: NoneDepth 62.3%

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 29
Current: $4,102 USD|Low: $2,198 USD|High: $4,361 USD|Avg: $2,962 USD|-5.9%
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 30, 2026
Retailer 12$2,198 USD
Retailer 10$2,346 USD
Retailer 11$2,372 USD
Retailer 13$2,387 USD
Retailer 9$2,440 USD
Retailer 2$2,573 USD
Retailer 5$2,598 USD
Retailer 14$2,811 USD
Retailer 4$2,939 USD
Retailer 7$2,994 USD
Retailer 8$3,073 USD
Retailer 6$3,638 USD
Retailer 3$3,932 USD
Helzberg Diamonds$4,102 USD

32 data points across 14 retailers

14 retailers$2,198 USD to $4,102 USD

A
Cheapest Retailer
-
$2,198 USD
SGD 2,970 SGD
A
Retailer 2
-
$2,346 USD
View
A
Retailer 3
-
$2,372 USD
View
A
Retailer 4
-
$2,387 USD
View
A
Retailer 5
-
$2,440 USD
View
A
Retailer 6
-
$2,573 USD
£2,026 GBP
View
A
Retailer 7
-
$2,598 USD
SGD 3,511 SGD
View
A
Retailer 8
-
$2,811 USD
View
A
Retailer 9
-
$2,939 USD
View
B+
Retailer 10
-
$2,994 USD
View
B+
Retailer 11
-
$3,073 USD
€2,927 EUR
View
B+
Retailer 12
-
$3,638 USD
View
B+
Retailer 13
-
$3,932 USD
View
Most Expensive
B+
Helzberg Diamonds
XZRHLLOPLHHIG · Oct 28
$4,102 USD
View
13 more retailers have this diamond
Prices start from $2,198 USDSave up to $1,904 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.

A
1.00ct Oval
$2,198 USD