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Round|Natural|GIA

1.50ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2121672455

Certificate GIA 2121672455

Diamond specifications and retailer prices

From $9,245 USD
As of October 25, 2026
Save $8,617 USD (48%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $17,862 USD at Diamond Quarter · As of October 28, 2026
View at Diamond Quarter

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2121672455. Listed at 19 retailers as of October 25, 2026, with prices from $9,245 to $17,862, a $8,617 spread on the same certified stone. Diamond Quarter lists it at $17,862. 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

1.50
Carat
E
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2121672455
Dimensions7.32 × 7.30 × 4.55 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.32 mm7.30 mm1.50 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2121672455
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.3%

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 25
Current: $11,126 USD|Low: $8,669 USD|High: $16,444 USD|Avg: $12,226 USD|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 4$9,245 USD
Retailer 5$10,403 USD
Retailer 1$11,126 USD
Retailer 3$12,462 USD
Retailer 6$13,688 USD
Retailer 2$16,335 USD

41 data points across 6 retailers

19 retailers$9,245 USD to $17,862 USD

B+
Cheapest Retailer
-
$9,245 USD
B+
Retailer 2
-
$9,473 USD
View
B+
Retailer 3
-
$9,653 USD
View
B+
Retailer 4
-
$9,941 USD
CA$13,807 CAD
View
B
Retailer 5
-
$10,403 USD
View
B
Retailer 6
-
$10,403 USD
View
Final sale: no returns
B+
Retailer 7
-
$11,126 USD
£8,760 GBP
View
B
Retailer 8
-
$11,270 USD
View
B
Retailer 9
-
$11,444 USD
View
B
Retailer 10
-
$12,017 USD
View
B
Retailer 11
-
$12,170 USD
View
B
Retailer 12
-
$12,170 USD
View
B
Retailer 13
-
$12,462 USD
€11,869 EUR
View
B
Retailer 14
-
$12,570 USD
View
B
Retailer 15
-
$13,004 USD
View
B
Retailer 16
-
$13,688 USD
View
B
Retailer 17
-
$16,335 USD
£12,862 GBP
View
B
Retailer 18
-
$17,339 USD
View
Most Expensive
B
Diamond Quarter
1.5SI2E2155C50DN · Oct 28
$17,862 USD
£14,064 GBP
View
18 more retailers have this diamond
Prices start from $9,245 USDSave up to $8,617 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+
1.50ct Round
$9,245 USD