Round|Natural|GIA

1.23ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2136111141

Certificate GIA 2136111141

Diamond specifications and retailer prices

From $8,080 USD
As of November 1, 2026
Save $3,148 USD (28%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $14,971 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2136111141. Listed at 13 retailers as of November 1, 2026, with a 39% 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

1.23
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2136111141
Dimensions6.94 × 6.92 × 4.18 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.94 mm6.92 mm1.23 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2136111141
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 60.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $14,971 USD|Low: $7,928 USD|High: $14,971 USD|Avg: $10,803 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$8,080 USD
Retailer 4$8,493 USD
Retailer 7$8,982 USD
Retailer 2$9,756 USD
Retailer 8$9,881 USD
Retailer 3$10,820 USD
Retailer 5$14,028 USD
NZ Jewellers$14,971 USD

40 data points across 8 retailers

13 retailers$8,080 USD to $11,228 USD

B
Cheapest Retailer
-
$8,080 USD
B
Retailer 2
-
$8,493 USD
View
B
Retailer 3
-
$8,982 USD
View
Final sale: no returns
B
Retailer 4
-
$9,731 USD
View
B
Retailer 5
-
$9,756 USD
View
B
Retailer 6
-
$9,881 USD
View
B
Retailer 7
-
$10,690 USD
View
B
Retailer 8
-
$10,690 USD
View
B
Retailer 9
-
$10,820 USD
View
B
Retailer 10
-
$11,040 USD
View
B
Retailer 11
-
$11,228 USD
View
Retailer 12
-
$14,028 USD
View
Price under review
Most Expensive
NZ Jewellers
d468309c-1b94-4227-b591-484861551621 · Nov 5
$14,971 USD
View
Price under review
12 more retailers have this diamond
Prices start from $8,080 USDSave up to $3,148 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
1.23ct Round
$8,080 USD