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Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

GD • D/SI1 • GIA 6452767979

Certificate GIA 6452767979

Diamond specifications and retailer prices

From $10,970 USD
As of November 1, 2026
Save $9,446 USD (46%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $20,416 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6452767979. Listed at 12 retailers as of October 30, 2026, with prices from $10,970 to $20,416, a $9,446 spread on the same certified stone. NZ Jewellers lists it at $20,416. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6452767979
Dimensions11.20 × 6.10 × 3.80 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Indented Natural, Needle
Top View
11.20 mm6.10 mm1.51 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6452767979
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.2%

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: Nov 1
Current: $13,070 USD|Low: $10,970 USD|High: $19,362 USD|Avg: $14,574 USD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6$10,970 USD
Retailer 7$13,067 USD
Retailer 1$13,070 USD
Retailer 5$13,336 USD
Retailer 8$13,781 USD
Retailer 4$14,795 USD
Retailer 3$17,997 USD
Retailer 2$19,131 USD

44 data points across 8 retailers

12 retailers$10,970 USD to $20,416 USD

B+
Cheapest Retailer
-
$10,970 USD
B
Retailer 2
-
$12,250 USD
View
B
Retailer 3
-
$13,067 USD
View
B
Retailer 4
-
$13,070 USD
£10,291 GBP
View
B
Retailer 5
-
$13,271 USD
View
Retailer 6
-
$13,336 USD
A$20,518 AUD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$13,781 USD
View
B
Retailer 8
-
$14,402 USD
View
B
Retailer 9
-
$14,795 USD
€14,090 EUR
View
B
Retailer 10
-
$17,997 USD
ZAR 290,738 ZAR
View
B
Retailer 11
-
$19,131 USD
£15,064 GBP
View
Most Expensive
C
NZ Jewellers
e89861c4-af17-49d4-9b0d-118670f8c394 · Oct 30
$20,416 USD
View
11 more retailers have this diamond
Prices start from $10,970 USDSave up to $9,446 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+
1.51ct Marquise
$10,970 USD