Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 6555154141

Certificate GIA 6555154141

Diamond specifications and retailer prices

From $11,466 CAD
$8,208 USD
As of October 30, 2026
Save $8,947 CAD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $20,413 CAD 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555154141. Listed at 16 retailers as of October 30, 2026, with prices from $11,466 to $20,413, a $8,947 spread on the same certified stone. NZ Jewellers lists it at $20,413. 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
I
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.42°
Pavilion angle37.74°
OriginNatural
Grading LabGIA
CertificateGIA 6555154141
Dimensions12.68 × 5.80 × 3.40 mm
L/W Ratio2.19
Top View
12.68 mm5.80 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555154141
Side View
Table 60.0%Crown 39.42°Girdle: MED-VTKPavilion 37.74°Culet: NoneDepth 58.6%

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 30
Current: $19,128 CAD|Low: $13,314 CAD|High: $19,359 CAD|Avg: $15,329 CAD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 3$13,392 CAD
Retailer 6$13,444 CAD
Retailer 7$13,472 CAD
Retailer 2$13,897 CAD
Retailer 5$15,432 CAD
Retailer 4$17,992 CAD
Retailer 1$19,128 CAD

38 data points across 7 retailers

16 retailers$11,466 CAD to $20,413 CAD

B+
Cheapest Retailer
-
$11,466 CAD
$8,208 USD
B+
Retailer 2
-
$12,160 CAD
$8,705 USD
View
B+
Retailer 3
-
$12,248 CAD
$8,768 USD
View
B+
Retailer 4
-
$12,350 CAD
$8,841 USD
View
B
Retailer 5
-
$13,057 CAD
$9,347 USD
View
B
Retailer 6
-
$13,268 CAD
$9,498 USD
View
B+
Retailer 7
-
$13,392 CAD
£7,549 GBP
View
Retailer 8
-
$13,444 CAD
A$14,807 AUD
View
Price last confirmed 10 days ago
B
Retailer 9
-
$13,472 CAD
$9,644 USD
View
B
Retailer 10
-
$13,897 CAD
£7,834 GBP
View
B
Retailer 11
-
$15,309 CAD
$10,959 USD
View
B
Retailer 12
-
$15,432 CAD
€10,521 EUR
View
Retailer 13
-
$16,120 CAD
$11,540 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$17,992 CAD
ZAR 208,082 ZAR
View
B
Retailer 15
-
$19,128 CAD
£10,782 GBP
View
Most Expensive
B
NZ Jewellers
10678399-9b5e-4a92-b356-16fd98a4ee16 · Oct 30
$20,413 CAD
$14,613 USD
View
15 more retailers have this diamond
Prices start from $11,466 CADSave up to $8,947 CAD

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
$11,466 CAD