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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 $3,129 AUD
SGD 2,970 SGD
As of October 29, 2026
Save $2,711 AUD (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,840 AUD at Helzberg Diamonds · As of October 30, 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 29, 2026, with prices from $3,129 to $5,840, a $2,711 spread on the same certified stone. Helzberg Diamonds lists it at $5,840. 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
Colour
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: $5,840 AUD|Low: $3,129 AUD|High: $6,208 AUD|Avg: $4,227 AUD|-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$3,129 AUD
Retailer 10$3,340 AUD
Retailer 11$3,377 AUD
Retailer 13$3,398 AUD
Retailer 9$3,474 AUD
Retailer 7$3,664 AUD
Retailer 5$3,699 AUD
Retailer 14$4,002 AUD
Retailer 4$4,184 AUD
Retailer 2$4,262 AUD
Retailer 8$4,375 AUD
Retailer 6$5,179 AUD
Retailer 3$5,597 AUD
Helzberg Diamonds$5,840 AUD

32 data points across 14 retailers

14 retailers$3,129 AUD to $5,840 AUD

A
Cheapest Retailer
-
$3,129 AUD
SGD 2,970 SGD
A
Retailer 2
-
$3,340 AUD
$2,346 USD
View
A
Retailer 3
-
$3,377 AUD
$2,372 USD
View
A
Retailer 4
-
$3,398 AUD
$2,387 USD
View
A
Retailer 5
-
$3,474 AUD
$2,440 USD
View
A
Retailer 6
-
$3,664 AUD
£2,026 GBP
View
A
Retailer 7
-
$3,699 AUD
SGD 3,511 SGD
View
A
Retailer 8
-
$4,002 AUD
$2,811 USD
View
A
Retailer 9
-
$4,184 AUD
$2,939 USD
View
B+
Retailer 10
-
$4,262 AUD
$2,994 USD
View
B+
Retailer 11
-
$4,375 AUD
€2,927 EUR
View
B+
Retailer 12
-
$5,179 AUD
$3,638 USD
View
B+
Retailer 13
-
$5,597 AUD
$3,932 USD
View
Most Expensive
B+
Helzberg Diamonds
XZRHLLOPLHHIG · Oct 30
$5,840 AUD
$4,102 USD
View
13 more retailers have this diamond
Prices start from $3,129 AUDSave up to $2,711 AUD

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
$3,129 AUD